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Related-Party Transactions (Tables) | 6 Months Ended
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Jun. 30, 2017
PSE And G [Member] |
Related Party Transaction [Line Items] |
Schedule Of Related Party Transactions, Revenue | PSE&G The financial statements for PSE&G include transactions with related parties as follows:
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
| Related-Party Transactions | 2017 |  | 2016 |  | 2017 |  | 2016 |
|  | Millions |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Net Billings from Power primarily through BGS and BGSS (A) | $ | 296 |  |  | $ | 297 |  |  | $ | 895 |  |  | $ | 842 |  |
| Administrative Billings from Services (B) | 79 |  |  | 82 |  |  | 144 |  |  | 151 |  |
| Total Billings from Affiliates | $ | 375 |  |  | $ | 379 |  |  | $ | 1,039 |  |  | $ | 993 |  |
Schedule Of Related Party Transactions, Payables |
|  | As of |  | As of |
| Related-Party Transactions | June 30, 2017 |  | December 31, 2016 |
|  | Millions |
| Receivables from PSEG (C) | $ | 20 |  |  | $ | 76 |  |
| Payable to Power (A) | $ | 90 |  |  | $ | 193 |  |
| Payable to Services (B) | 56 |  |  | 67 |  |
| Accounts Payable—Affiliated Companies | $ | 146 |  |  | $ | 260 |  |
| Working Capital Advances to Services (D) | $ | 33 |  |  | $ | 33 |  |
| Long-Term Accrued Taxes Payable | $ | 115 |  |  | $ | 130 |  |
Power [Member] |
Related Party Transaction [Line Items] |
Schedule Of Related Party Transactions, Revenue | The financial statements for Power include transactions with related parties as follows:
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
| Related-Party Transactions | 2017 |  | 2016 |  | 2017 |  | 2016 |
|  | Millions |
| Billings to Affiliates: |  |  |  |  |  |  |  |
| Net Billings to PSE&G primarily through BGS and BGSS (A) | $ | 296 |  |  | $ | 297 |  |  | $ | 895 |  |  | $ | 842 |  |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Administrative Billings from Services (B) | $ | 42 |  |  | $ | 45 |  |  | $ | 78 |  |  | $ | 90 |  |
Schedule Of Related Party Transactions, Receivables |
|  | As of |  | As of |
| Related-Party Transactions | June 30, 2017 |  | December 31, 2016 |
|  | Millions |
| Receivables from PSE&G (A) | $ | 90 |  |  | $ | 193 |  |
| Receivables from PSEG (C) | 49 |  |  | 12 |  |
| Accounts Receivable—Affiliated Companies | $ | 139 |  |  | $ | 205 |  |
| Payable to Services (B) | $ | 20 |  |  | $ | 25 |  |
| Accounts Payable—Affiliated Companies | $ | 20 |  |  | $ | 25 |  |
| Short-Term Loan Due (to) from Affiliate (E) | $ | 233 |  |  | $ | 87 |  |
| Working Capital Advances to Services (D) | $ | 17 |  |  | $ | 17 |  |
| Long-Term Accrued Taxes Payable | $ | 93 |  |  | $ | 77 |  |

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